unit-testing - react-native-firebase-messaging 开 Jest

Question

我正在尝试模拟 Firebase Cloud Messaging (FCM)，来自 @react-native-firebase/messaging .到目前为止，这是我的模拟:

jest.mock('@react-native-firebase/messaging', () => ({
  hasPermission: jest.fn(() => Promise.resolve(true)),
  subscribeToTopic: jest.fn(),
  deleteToken: jest.fn(),
  unsubscribeFromTopic: jest.fn(),
  registerForRemoteNotifications: jest.fn(),
  requestPermission: jest.fn(() => Promise.resolve(true)),
  getToken: jest.fn(() => Promise.resolve('myMockToken')),
  getAPNSToken: jest.fn(() => Promise.resolve('myMockToken')),
  onTokenRefresh: jest.fn(() => Promise.resolve('myMockToken')),
  onMessage: jest.fn(),
  isRegisteredForRemoteNotifications: jest.mock(false),
  isAutoInitEnabled: jest.mock(false),
}));

但是当我运行我的测试时，我得到:

   Invariant Violation: Native module cannot be null.

      at invariant (packages/mobile/node_modules/invariant/invariant.js:40:15)
      at RNFBNativeEventEmitter.invariant (packages/mobile/node_modules/react-native/Libraries/EventEmitter/NativeEventEmitter.js:36:7)
      at new RNFBNativeEventEmitter (node_modules/@react-native-firebase/messaging/node_modules/@react-native-firebase/app/lib/internal/RNFBNativeEventEmitter.js:24:5)
      at Object.<anonymous> (node_modules/@react-native-firebase/messaging/node_modules/@react-native-firebase/app/lib/internal/RNFBNativeEventEmitter.js:48:16)
      at Object.<anonymous> (node_modules/@react-native-firebase/messaging/node_modules/@react-native-firebase/app/lib/internal/registry/nativeModule.js:21:1)

这告诉我我仍然需要模拟一些其他功能。我在这里缺少什么？

Answer 1

我发现我没有正确地 mock 。我创建了一个

__mocks__/@react-native-firebase/messaging.js. 

在那个文件中我写道:

module.exports = {
  hasPermission: jest.fn(() => Promise.resolve(true)),
  subscribeToTopic: jest.fn(),
  unsubscribeFromTopic: jest.fn(),
  requestPermission: jest.fn(() => Promise.resolve(true)),
  getToken: jest.fn(() => Promise.resolve('myMockToken')),
};

另外在我的设置玩笑中，我有:

reactNative.NativeModules.RNCNetInfo = {
  getCurrentState: jest.fn(() => Promise.resolve()),
  addListener: jest.fn(),
  removeListeners: jest.fn(),
};